Examples of com.jme3.scene.Node

com.jme3.scene.Node
Node defines an internal node of a scene graph. The internal node maintains a collection of children and handles merging said children into a single bound to allow for very fast culling of multiple nodes. Node allows for any number of children to be attached. @author Mark Powell @author Gregg Patton @author Joshua Slack

                JSONArray jsa = environment.getJSONObject(key).getJSONArray("objects");
                for (int i = 0; i < jsa.length(); i++) {
                    JSONObject someObject = jsa.getJSONObject(i);
                    if (!model.objects.containsKey(someObject.getInt("id"))) {
                        // new node with geometry
                        Node objectNode = new Node("id" + someObject.getInt("id"));
                        objectNode.attachChild(createObject(key, x, y));
                        model.objects.put(someObject.getInt("id"), objectNode);
                        model.worldNode.attachChild(objectNode);
                    }
                }
            }

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            newWheel.setWheelsDampingRelaxation(wheel.getWheelsDampingRelaxation());
            newWheel.setMaxSuspensionForce(wheel.getMaxSuspensionForce());


            //TODO: bad way finding children!
            if (spatial instanceof Node) {
                Node node = (Node) spatial;
                Spatial wheelSpat = node.getChild(wheel.getWheelSpatial().getName());
                if (wheelSpat != null) {
                    newWheel.setWheelSpatial(wheelSpat);
                }
            }
        }

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    }


    @Override
    protected void createSpatialData(Spatial model) {
        targetModel = model;
        Node parent = model.getParent();




        Vector3f initPosition = model.getLocalTranslation().clone();
        Quaternion initRotation = model.getLocalRotation().clone();
        initScale = model.getLocalScale().clone();


        model.removeFromParent();
        model.setLocalTranslation(Vector3f.ZERO);
        model.setLocalRotation(Quaternion.IDENTITY);
        model.setLocalScale(1);
        //HACK ALERT change this
        //I remove the skeletonControl and readd it to the spatial to make sure it's after the ragdollControl in the stack
        //Find a proper way to order the controls.
        SkeletonControl sc = model.getControl(SkeletonControl.class);
        model.removeControl(sc);
        model.addControl(sc);


        // put into bind pose and compute bone transforms in model space
        // maybe dont reset to ragdoll out of animations?
        scanSpatial(model);




        if (parent != null) {
            parent.attachChild(model);


        }
        model.setLocalTranslation(initPosition);
        model.setLocalRotation(initRotation);
        model.setLocalScale(initScale);

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        }
        Spatial debugShape;
        if (collisionShape instanceof CompoundCollisionShape) {
            CompoundCollisionShape shape = (CompoundCollisionShape) collisionShape;
            List<ChildCollisionShape> children = shape.getChildren();
            Node node = new Node("DebugShapeNode");
            for (Iterator<ChildCollisionShape> it = children.iterator(); it.hasNext();) {
                ChildCollisionShape childCollisionShape = it.next();
                CollisionShape ccollisionShape = childCollisionShape.shape;
                Geometry geometry = createDebugShape(ccollisionShape);


                // apply translation
                geometry.setLocalTranslation(childCollisionShape.location);


                // apply rotation
                TempVars vars = TempVars.get();                
                Matrix3f tempRot = vars.tempMat3;


                tempRot.set(geometry.getLocalRotation());
                childCollisionShape.rotation.mult(tempRot, tempRot);
                geometry.setLocalRotation(tempRot);


                vars.release();


                node.attachChild(geometry);
            }
            debugShape = node;
        } else {
            debugShape = createDebugShape(collisionShape);
        }

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        // coopt diff for our in direction:
        look.set(camera.getDirection()).negateLocal();
        // coopt loc for our left direction:
        left.set(camera.getLeft()).negateLocal();
        orient.fromAxes(left, camera.getUp(), look);
        Node parent = spatial.getParent();
        Quaternion rot=new Quaternion().fromRotationMatrix(orient);
        if ( parent != null ) {
            rot =  parent.getWorldRotation().inverse().multLocal(rot);
            rot.normalizeLocal();
        }
        spatial.setLocalRotation(rot);
        fixRefreshFlags();
    }

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        initSoftParticles(viewPort, enabledSoftParticles);
    }


    private void makeSoftParticleEmitter(Spatial scene, boolean enabled) {
        if (scene instanceof Node) {
            Node n = (Node) scene;
            for (Spatial child : n.getChildren()) {
                makeSoftParticleEmitter(child, enabled);
            }
        }
        if (scene instanceof ParticleEmitter) {
            ParticleEmitter emitter = (ParticleEmitter) scene;

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        Map<Integer, List<Float>> map = new HashMap<Integer, List<Float>>();
        if (model instanceof Geometry) {
            Geometry g = (Geometry) model;
            buildPointMapForMesh(g.getMesh(), map);
        } else if (model instanceof Node) {
            Node node = (Node) model;
            for (Spatial s : node.getChildren()) {
                if (s instanceof Geometry) {
                    Geometry g = (Geometry) s;
                    buildPointMapForMesh(g.getMesh(), map);
                }
            }

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            Geometry g = (Geometry) model;
            for (Integer index : boneIndices) {
                points.addAll(getPoints(g.getMesh(), index, initialScale, initialPosition, weightThreshold));
            }
        } else if (model instanceof Node) {
            Node node = (Node) model;
            for (Spatial s : node.getChildren()) {
                if (s instanceof Geometry) {
                    Geometry g = (Geometry) s;
                    for (Integer index : boneIndices) {
                        points.addAll(getPoints(g.getMesh(), index, initialScale, initialPosition, weightThreshold));
                    }

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    sphereJoint.setTextureMode(Sphere.TextureMode.Projected);
    TangentBinormalGenerator.generate(sphereJoint);
    for (int i = 0; i < numJoints; i++) {


      // Create pivots
      Node pivot = new Node("pivot");
      pivots[i] = pivot;


      // Create sections
      Geometry section = new Geometry("Box", box);
      section.setMaterial(matRoboticArm);
      sections[i] = section;


      // create joints
      Geometry sphere = new Geometry("joint", sphereJoint);
      sphere.setMaterial(matRoboticArm);
      joints[i] = sphere;


    }


    // Create Head
    headNode = new Node("headNode");
    Sphere sphereHead = new Sphere(20, 20, HEAD_RADIUS);
    sphereHead.setTextureMode(Sphere.TextureMode.Projected);
    TangentBinormalGenerator.generate(sphereHead);
    head = new Geometry("head", sphereHead);
    head.setMaterial(matRoboticArm);

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     * @param rootNode
     *            indicates if the feature is a root bone or root spatial or not
     */
    private SimulationNode(Long featureOMA, BlenderContext blenderContext, boolean rootNode) {
        this.blenderContext = blenderContext;
        Node spatial = (Node) blenderContext.getLoadedFeature(featureOMA, LoadedFeatureDataType.LOADED_FEATURE);
        if (blenderContext.getMarkerValue(ObjectHelper.ARMATURE_NODE_MARKER, spatial) != null) {
            skeleton = blenderContext.getSkeleton(featureOMA);


            Node nodeWithAnimationControl = blenderContext.getControlledNode(skeleton);
            animControl = nodeWithAnimationControl.getControl(AnimControl.class);


            boneStartTransforms = new HashMap<Bone, Transform>();
            for (int i = 0; i < skeleton.getBoneCount(); ++i) {
                Bone bone = skeleton.getBone(i);
                boneStartTransforms.put(bone, new Transform(bone.getWorldBindPosition(), bone.getWorldBindRotation(), bone.getWorldBindScale()));
            }
        } else {
            if (rootNode && spatial.getParent() != null) {
                throw new IllegalStateException("Given spatial must be a root node!");
            }
            this.spatial = spatial;
            spatialStartTransform = spatial.getLocalTransform().clone();
        }


        name = '>' + spatial.getName() + '<';


        constraints = this.findConstraints(featureOMA, blenderContext);
        if (constraints == null) {
            constraints = new ArrayList<Constraint>();
        }


        // add children nodes
        if (skeleton != null) {
            // bone with index 0 is a root bone and should not be considered
            // here
            for (int i = 1; i < skeleton.getBoneCount(); ++i) {
                BoneContext boneContext = blenderContext.getBoneContext(skeleton.getBone(i));
                List<Constraint> boneConstraints = this.findConstraints(boneContext.getBoneOma(), blenderContext);
                if (boneConstraints != null) {
                    constraints.addAll(boneConstraints);
                }
            }
            Node node = blenderContext.getControlledNode(skeleton);
            Long animatedNodeOMA = ((Number)blenderContext.getMarkerValue(ObjectHelper.OMA_MARKER, node)).longValue();
            animations = blenderContext.getAnimations(animatedNodeOMA);
        } else {
            animations = blenderContext.getAnimations(featureOMA);
            for (Spatial child : spatial.getChildren()) {

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